Lamp



FIG. 1 is a perspective view of the lamp;

FIG. 2 is a front view of the lamp;

FIG. 3 is a back view of the lamp;

FIG. 4 is a left side view of the lamp;

FIG. 5 is a right side view of the lamp;

FIG. 6 is a top view of the lamp; and,

FIG. 7 is a bottom view of the lamp.

The portions of the lamp shown in broken lines form no part of the claimed design. 

CLAIM What is claimed is the ornamental design for a lamp, as shown. 